what do we know in terms of nelson mandela's health? we're learning that he's going three extensive testing, is that right? the president treat mrs. mandela's health as a closely guarded secret and they ee basically responsible for communicating this information to us. they're saying he has been admitted at a hospital. they're not even telling us which hospital it is. we're standing outside the number one military hospital where he usually is treated when he comes here. as you say, yesterday they said he's undergoing tests. they say this is consistent with a man his age. he's 94 years old. basically saying there is no cause for alarm. but today the president himself visiting mr. mandela. people will read a lot into that. also the statement that came on after that visit. president zuma saying he's in good care and comfortable. so there are more questions than answers here in south africa at the moment, susan. >> yeah. at this tiemt we don't know the full details. as you said, 94 years old. nkepile sms mabuse in south after from i ka. we